Improvement in boot and shoe crimping-machines



L. o. MAKEVPEACE.

ImprovementY in B-oot and ShoeCrmpng-Machine.

No, 131,288, Pa'tented Sep. 10, 1872.

STATES yIDl-iTiain-"r GFFIGE.

IMPROVEMENT IN OOT AND SHOE CRIMPING-NIA-CHINES.

Specification forming part of Letters Patent No. ISLQSS, dated September 10, 1872. i

l To all whom it may concern:

Be it known that I, LYSANDER O. MAKE- PEAGE, of Worcester, in the county of Worcester and State of Massachusetts, have invented an Improvement in Boot and Shoe Grimping-Machines; and I do hereby declare that the following, taken in connection with the drawing which accompanies and forms part of this specification, is a description of my invention sufficient to enable those Skilled in the art to practice it.

My invention relates to that class of crimping-machines in which two stationary crimping-jaws are employed, in combination with a movable follower that drives the boot or shoe upper down between the jaws,1 and crimps or forms the leather. The extent of opening movementof the jaws is governed and determined by two bolts, one extending through and connecting the jaws about half way down and in a center line, and the other extending through one of the jaws in the same vertical line near the bottom of the jaws, the lower bolt being a set-screw, by turning which the jaws are forced apart or permitted to close toward each other at the point where the screw passes through the jaw-plate, one of the jaws slipping upon the bolt, the extent of movement ofthe jaw being controlled by a nut or a nut-threaded winch that works on the screw-bolt. rIhe jaws thus made and connected answer their purpose perfectly in crimping boot-legs where the length of leg about equals the length of foot, one part entering the jaws on one side of the center or angle of the jaws, and the other part at the other side thereof. But when the length of foot greatly exceeds the length of leg, or when there is only a vamp or foot portion to crimp, the jaws fail to crimp or to equally crimp, because, being hung or connected at the center line, and the leather entering on one side ofthe center line, the strain of the leather opens the jaws at the entering side of the -center by closing them at the opposite side,

there being nothing to prevent such closing.

The object of my invention is to obviatel this difliculty, and I accomplish the desired result by making provision for adjustment of the jaw connections so that an equal open angle l.

jaws ofthe crimper 5 c, the follower that presses the boot or shoe top down between the jaws to crimp it. The jaws are stationary as to the i movement of the follower, but they have provision for relative adjustment, the jaw-plates d c being connected and their extent of opening regulated by a screw-bolt,f, and set-screwg. The set-screw g -works througha nutthread in the plate d, and its inner end abuts against `the inner surface of the plate c; and the bolt f is a connectingscrew passing through and connecting both plates, the jaws being forced in by turning the handle h, thatV works on the screw f. t' denotes the hole usually made for reception of the bolt f, and k the hole usually made for reception ofthe bolt g, the holes v1 k being in vertical line and at the center of the jaws, or directly under the But instead of making the connections invariably at these holes, I form a series of other holes, m, for reception and change of position of the bolt f, and a second series of holesn, for reception and change of position of the bolt g, and by setting the bolts in any two of these holes in vertical line equalopening of the jaws may be produced with any form of upper, the bolts being located in accordance with the extent and position of the line upon which the crimping is to be effected. For the set-screw g the series of holes is essential, but'for the connecting-bolt f a slot in each plate may be made.

In crimping certain kinds of stock the jawfaces, if rigid, fail to take hold of the leather evenly, on account of variation in thicknessof the stock. To remedy this, I form each jaw with an elastic face, o, made of caoutchouc or similar elastic material, the yieldbolts or screws, substantially as shown and in nature of which enables the face of the described.

jaw to t the stock at all points. LYSANDER O. MAKEPEAGE.

I claim- The jaws a b, connected and set by bolts Witnesses:

or screws f g, the jaws being made with bolty FRANCIS GOULD,

holes or slots for change or adjustment of such M. W. FROTHINGHAM. 

